IGN API elevation line

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IGN API elevation line

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Last edited Jan 9, 2022

Created on Jan 9, 2022

This example shows elevation profiles extracted from a user-selected line feature in QGIS. It calls the IGN REST elevationLine API with sampled lon/lat coordinates, then builds a GeoJSON FeatureCollection of 3D points with elevation (z) and accuracy values. The script uses `urllib.request` to fetch JSON data and `json.dump` to write a temporary GeoJSON file, which QGIS then loads as a vector layer. Users subsequently convert to a projected CRS and apply the Profile tool plugin to render the elevation graph.

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